Lateral air inlet heat dissipation battery pack

Abstract

The side air inlet heat dissipation battery pack provided by the utility model comprises the battery pack box body and the battery module arranged in the battery pack box body, the heat dissipation structure is arranged on the battery module, and the heat dissipation structure can improve the heat dissipation effect of the battery pack, so that overlarge temperature difference between battery cells in the battery module is avoided, the performance of the battery pack is improved, and the service life of the battery pack is prolonged. According to the side air inlet heat dissipation battery pack provided by the utility model, the heat dissipation effect of the battery pack is improved, the overlarge temperature difference between the battery cells in the battery pack is avoided, and the service life of the battery pack is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of battery pack, concretely, the utility model relates to a side air inlet heat dissipation battery pack. BACKGROUND

[0002] In the field of energy storage battery pack, the main market is liquid-cooled battery pack and air-cooled battery pack, and the air-cooled battery pack is dominant in the North American market, and the liquid-cooled battery pack has certain energy density advantage compared with the air-cooled battery pack, but the replacement cycle of the cooling liquid is short, and the maintenance cost is high during use. The air-cooled battery pack mostly adopts the rear-end air inlet mode, and since the rear-end cold air inlet passes through the battery pack first, the temperature difference between the battery pack and the battery pack is large, and the temperature of the battery pack is always lower than that of the front end of the battery pack and cannot be controlled.

[0003] To solve the above problems, document 118231859A discloses an air-cooled battery pack, which comprises a box body having a containing cavity, a battery management unit arranged in the containing cavity, a battery cell assembly arranged on one side of the battery management unit in a first direction, the battery cell assembly comprising two battery cell modules arranged in a second direction perpendicular to the first direction, a first air duct formed between the two battery cell modules, and a fan arranged on the side of the first air duct away from the battery management unit. The box body comprises two first side walls located on both sides of the containing cavity in the second direction, and an upper cover located above the containing cavity, and the two first side walls are provided with first ventilation openings corresponding to the battery cell assembly, and the upper cover is provided with a second ventilation opening close to the battery management unit, but the above problems cannot be solved. SUMMARY

[0004] The utility model is to solve the above problems, and aims at providing a side air inlet heat dissipation battery pack which can improve the heat dissipation effect of the battery pack, avoid the large temperature difference between the battery cells in the battery pack, and prolong the service life of the battery pack. In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0005] The utility model provides a kind of side air inlet heat dissipation battery pack, with such characteristics, including battery pack box body and the battery module being set in battery pack box body, and battery module is equipped with heat dissipation structure.

[0006] In the side air inlet heat dissipation battery pack provided by the utility model, the battery pack box body can also have the following characteristics: the battery pack box body includes a bottom support, a first side plate, a second side plate and a cover plate assembly, the first side plate and the second side plate are arranged on both sides of the bottom support, the cover plate assembly is connected to the first side plate and the second side plate on both sides, and the cover plate assembly is located above the bottom support.

[0007] The side air inlet heat dissipation battery pack further has the features that the cover plate assembly comprises a top cover and a top plate, the two sides of the top cover are connected with the first side plate and the second side plate respectively, and the top plate is arranged on the top cover and away from one side of the bottom support.

[0008] The side air inlet heat dissipation battery pack further has the features that the battery module is arranged on the bottom support, the battery module comprises a first battery module and a second battery module, and the first battery module and the second battery module are connected through a series copper bar.

[0009] The side air inlet heat dissipation battery pack further has the features that the heat dissipation structure comprises an intermediate air cavity arranged between the first battery module and the second battery module.

[0010] The side air inlet heat dissipation battery pack further has the features that the first battery module and the second battery module comprise a plurality of battery cells, the heat dissipation structure further comprises a heat dissipation plate arranged between the battery cells, and the heat dissipation plate is uniformly provided with honeycomb-shaped heat dissipation holes.

[0011] The side air inlet heat dissipation battery pack further has the features that the first side plate is provided with a fan and an ESS slave control unit, the first side plate is further provided with a first dustproof support, and the first dustproof support covers the fan and the ESS slave control unit.

[0012] The side air inlet heat dissipation battery pack further has the features that the first side plate is further provided with a positive electrode connector and a negative electrode connector.

[0013] The side air inlet heat dissipation battery pack further has the features that the battery module is provided with a first connecting copper bar and a second connecting copper bar away from the series copper bar, one end of the first connecting copper bar is connected with the first battery module, the other end of the first connecting copper bar is connected with the negative electrode connector, one end of the second connecting copper bar is connected with the second battery module, and the other end of the second connecting copper bar is connected with the positive electrode connector.

[0014] The side air inlet heat dissipation battery pack provided by the utility model has the advantages that the side air inlet heat dissipation battery pack comprises a battery pack box body and a battery module arranged in the battery pack box body, the battery module is provided with a heat dissipation structure, the heat dissipation structure can improve the heat dissipation effect of the battery pack, so that the temperature difference between the battery cells in the battery module is prevented from being too large, the performance of the battery pack is improved, and the service life of the battery pack is prolonged.

[0015] Therefore, the side air inlet heat dissipation battery pack provided by the utility model improves the heat dissipation effect of the battery pack, prevents the temperature difference between the battery cells in the battery pack from being too large, and prolongs the service life of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present specification includes the following drawings, the contents shown are respectively:

[0017] Figure 1 It is the structure schematic diagram of the side air intake heat dissipation battery pack in the front view direction in the embodiment of the utility model;

[0018] Figure 2 It is the structure schematic diagram of the side air intake heat dissipation battery pack in the top view direction in the embodiment of the utility model;

[0019] Figure 3 It is the structure schematic diagram of the side air intake heat dissipation battery pack in the side view direction in the embodiment of the utility model;

[0020] Figure 4 It is the exploded view of the side air intake heat dissipation battery pack in the embodiment of the utility model;

[0021] Figure 5 It is the structure schematic diagram of the first side plate in the embodiment of the utility model.

[0022] In the drawing, it is marked as: battery pack box-10, bottom support-11, first side plate-12, second side plate-13, cover plate assembly-14, top cover-141, top plate-142, fan-15, ESS slave unit-16, first dustproof support-17, positive connector-18, negative connector-19, battery module-20, first battery module-21, second battery module-22, series copper bar-23, electric core-24, first connecting copper bar-25, second connecting copper bar-26, heat dissipation structure-30, middle air cavity-31, heat dissipation plate-32, blocking plate-33. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application are further described in detail below with reference to the drawings, and the purpose is to help the technical personnel in the field to have more complete, accurate and in-depth understanding of the inventive concept and technical scheme of the present application, and to help its implementation.

[0024] Figure 1 It is the structure schematic diagram of the side air intake heat dissipation battery pack in the front view direction in the embodiment of the utility model; Figure 2 It is the structure schematic diagram of the side air intake heat dissipation battery pack in the top view direction in the embodiment of the utility model; Figure 3 It is the structure schematic diagram of the side air intake heat dissipation battery pack in the side view direction in the embodiment of the utility model; Figure 4 It is the exploded view of the side air intake heat dissipation battery pack in the embodiment of the utility model.

[0025] As Figure 1 , Figure 2 , Figure 3 andFigure 4 As shown, the side air inlet heat dissipation battery pack provided by the utility model includes a battery pack box body 10 and a battery module 20 arranged in the battery pack box body 10, the battery module 20 is provided with a heat dissipation structure 30, the heat dissipation structure 30 can improve the heat dissipation effect of the battery pack, thereby avoiding that the temperature difference between the battery cells in the battery module 20 is too large, improving the performance of the battery pack and prolonging the service life of the battery pack, the side air inlet heat dissipation battery pack provided by the utility model improves the heat dissipation effect of the battery pack, avoids that the temperature difference between the battery cells in the battery pack is too large and prolongs the service life of the battery pack.

[0026] The battery pack box body 10 includes a bottom support 11, a first side plate 12, a second side plate 13 and a cover plate assembly 14, the first side plate 12 and the second side plate 13 are arranged at the two sides of the bottom support 11 respectively, the first side plate 12 and the second side plate 13 are arranged in parallel with each other, the two sides of the cover plate assembly 14 are connected with the first side plate 12 and the second side plate 13 respectively, the cover plate assembly 14 is located above the bottom support 11, the cover plate assembly 14 includes a top cover 141 and a top plate 142, the two sides of the top cover 141 are connected with the first side plate 12 and the second side plate 13 respectively, the top plate 142 is arranged on the side of the top cover 141 away from the bottom support 11, thereby enhancing the structural strength of the battery pack box body 10.

[0027] The battery module 20 is arranged on the bottom support 11, the battery module 20 includes a first battery module 21 and a second battery module 22, the first battery module 21 and the second battery module 22 are connected through a series copper bar 23, realizing the series connection between the first battery module 21 and the second battery module 22, the first battery module 21 and the second battery module 22 are both 1P11S modules, 11 battery cells are stacked in series, thereby improving the energy of the battery module 20.

[0028] The heat dissipation structure 30 includes an intermediate air cavity 31 arranged between the first battery module 21 and the second battery module 22, the intermediate air cavity 31 can provide an air duct for air circulation between the first battery module 21 and the second battery module 22, strengthening the heat exchange between the first battery module 21 and the second battery module 22, which is beneficial to reduce the temperature difference between the first battery module 21 and the second battery module 22, avoiding that the temperature difference between the battery cells in the battery pack is too large and prolonging the service life of the battery pack.

[0029] The first battery module 21 and the second battery module 22 comprise a plurality of battery cells 24, the heat dissipation structure 30 further comprises heat dissipation plates 32 arranged between the battery cells 24, the heat dissipation plates 32 are uniformly provided with honeycomb-shaped heat dissipation holes, one heat dissipation plate 32 is arranged between two battery cells 24, and the heat dissipation plate 32 is densely provided with the honeycomb-shaped heat dissipation holes, air can enter the side of the heat dissipation battery pack from the side air inlet, and then return from the first side plate 12, so that the temperature uniformity between the battery cells 24 is improved, the temperature difference between the battery cells in the battery pack is avoided from being too large, and the service life of the battery pack is prolonged.

[0030] Figure 5 It is a structural schematic view of the first side plate in the embodiment of the utility model.

[0031] As Figure 5 shown, the first side plate 12 is provided with a fan 15 and an ESS slave control unit 16, the fan 15 is used for enhancing air convection between the battery modules 20 and improving heat dissipation efficiency, the first side plate 12 is further provided with a first dustproof support 17, the first dustproof support 17 is arranged on the fan 15 and the ESS slave control unit 16, can prevent dust and other impurities from entering the fan 15 and the ESS slave control unit 16, and the reliability of the structure is improved.

[0032] In order to avoid that the temperature of the battery cells 24 close to the fan 15 is too low, the three battery cells 24 close to the fan 15 in the first battery module 21 are provided with blocking plates 33, two blocking plates 33 are arranged between the three battery cells 24 respectively, the three battery cells 24 close to the fan 15 in the second battery module 22 are provided with blocking plates 33, and two blocking plates 33 are arranged between the three battery cells 24 respectively, so that the temperature uniformity is further improved.

[0033] The first side plate 12 is further provided with a positive electrode connector 18 and a negative electrode connector 19, the battery module 20 is provided with a first connecting copper bar 25 and a second connecting copper bar 26 away from the series copper bar 23, one end of the first connecting copper bar 25 is connected with the first battery module 21, the other end of the first connecting copper bar 25 is connected with the negative electrode connector 19, one end of the second connecting copper bar 26 is connected with the second battery module 22, and the other end of the second connecting copper bar 26 is connected with the positive electrode connector 18, so that the first battery module 21 and the second battery module 22 are conveniently connected with the electric equipment, and the reliability of the structure is improved.

[0034] Effects of the embodiment

[0035] The side air-in heat dissipation battery pack improves the heat dissipation effect of the battery pack, avoids the temperature difference between the battery cells in the battery pack being too large, and prolongs the service life of the battery pack.

[0036] The heat dissipation plate 32 is provided with honeycomb-shaped heat dissipation holes, and one heat dissipation plate 32 is arranged between the two battery cells 24. The dense honeycomb-shaped heat dissipation holes on the heat dissipation plate 32 can supply air to the side of the side air-in heat dissipation battery pack, and then return the air from the first side plate 12, thereby improving the temperature uniformity between the battery cells 24, avoiding the temperature difference between the battery cells in the battery pack being too large, and prolonging the service life of the battery pack.

[0037] The utility model has been described exemplarily in combination with the drawings. Apparently, the specific implementation of the utility model is not limited by the above-mentioned mode. As long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model, or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A side air intake cooling battery pack, characterized in that, The application relates to a battery pack box (10) and a battery module (20) arranged in the battery pack box (10), wherein the battery module (20) is provided with a heat dissipation structure (30), the battery pack box (10) comprises a bottom support (11), a first side plate (12), a second side plate (13) and a cover plate assembly (14), the first side plate (12) and the second side plate (13) are arranged on the two sides of the bottom support (11) respectively, the two sides of the cover plate assembly (14) are connected with the first side plate (12) and the second side plate (13) respectively, the cover plate assembly (14) is located above the bottom support (11), the cover plate assembly (14) comprises a top cover (141) and a top plate (142), the two sides of the top cover (141) are connected with the first side plate (12) and the second side plate (13) respectively, the top plate (142) is arranged on the side of the top cover (141) away from the bottom support (11), the battery module (20) is arranged on the bottom support (11), the battery module (20) comprises a first battery module (21) and a second battery module (22), the first battery module (21) and the second battery module (22) are connected through a series copper bar (23), the heat dissipation structure (30) comprises an intermediate air cavity (31) arranged between the first battery module (21) and the second battery module (22), the first battery module (21) and the second battery module (22) comprise a plurality of battery cells (24), the heat dissipation structure (30) further comprises heat dissipation plates (32) arranged between the battery cells (24), the heat dissipation plates (32) are uniformly provided with honeycomb-shaped heat dissipation holes, the first side plate (12) is provided with a fan (15) and an ESS slave control unit (16), the first side plate (12) is further provided with a first dustproof support (17), and the first dustproof support (17) covers the fan (15) and the ESS slave control unit (16).

2. The lateral air intake cooling battery pack of claim 1, wherein, The first side plate (12) is further provided with a positive electrode connector (18) and a negative electrode connector (19).

3. The lateral air intake cooling battery pack of claim 2, wherein, The side of the battery module (20) away from the series copper bar (23) is provided with a first connecting copper bar (25) and a second connecting copper bar (26), one end of the first connecting copper bar (25) is connected with the first battery module (21), and the other end of the first connecting copper bar (25) is connected with the negative electrode connector (19); one end of the second connecting copper bar (26) is connected with the second battery module (22), and the other end of the second connecting copper bar (26) is connected with the positive electrode connector (18).

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